Jacquard mechanism for looms.



L. FUCHS.

JACQUAHD MECHANISM FOR LOOMS. APPLICATION FILED NOV. 7. mg.

LQEQMQ, Patented Jan. 30,1917.

4 SHEETS-SHEET I.

3 M van 0-1 L. FUCHS.

JACQUARD MECHANISM FOR LOOMS. APPLICATION FILED NOV. 7, 1914.

Patented Jai1.30,1917.

4 SHEE TS-SHEET 2.

ZLQILQAQQD L. FUCHS.

JACOUARD MECHANISM FOR LOQMS.

APPLICATION FILED NOV. 7, 1914.

M31 4.,M9. Patented Jan. 30, 1917.

4 SHEETS-SHEET 3.

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L. FUCHS.

JACQUARD MECHANISM FOR LOOMS.

APPLICATION FILED NOV- 7, I914.

Patented Jan. 30,1911:

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JACQ'JABD MECHANISM FQR LQOMS.

mam-mu LZEL-ehddtlo Specification of Letters Patent.

4- r" 'f Patented Jan. 36), loll Application filed November 7, 1914. Serial No. 870,879.

To all whom it may concern:

Be it known that I, linoronn Focus, a citizen of Switzerland, residing at Roslyn Heights, in the county of Nassau and State of New York, have invented certain new and useful Improvements in Jacquard Mechanism for Looms, of which the following is a specification.

This invention relates to jacquard mechanism for looms in which a vertically moving card cylinder operates a number of needles to unhook a predetermined number of grid bars or rods and give falling movement to a harness.

The main objectin view is to provide adjusting means for the cylinder support whereby the machine may readily be converted from ja zrd to a shaft or plain weaving loom any or this purpose the ar rangement is constructed so as to facilitate removal of the card holder or cylinder to enable a different index or chain cylinder to be substituted, thereby converting the machine into a line, medium, coarse, or plain weaving apparatus.

Another important feature is the provi sion of a special frame embodying supporting racks so that when it desired to op erate the machine for a plain weave, a number of the grills or grill oars can be moved out of enga ement with the grid frames and disposed on the main jacquard frame, where they are at all times readily accessible. rendering unnecessary, as will be appreciated, the entire displacement of those bars which are not required in one type of weaving operation but maintaining them in their proper position for quick replacement when the ma chine is converted into the other type.

A still further novel feature of the invention lies in the provision of a rack in the frame of the machine for supporting and guiding the needles used in this mechanism, said frame comprising guide means for the grill bars, and means for maintaining the needles in position for proper cooperation with said bars, the needles being arranged in a vertical line so as to tend move downwardly to automatically 2 when rel-eased any other in' crr To the end of accomplishing the foregoing objects I employ a pair of horizontally moving reciprocating grill frames to alternately engage the griff bars and move them in a rectilinear horizontal reciprocating path to give rising and falling motion to a harness connected to each of the bars and thus form a shed. at the loom'portion of the ma chine. Each grill bar is formed with a hook at one end, while the other end. is offset so as to form an. abutment shoulder,

hence when the hooked end is lifted to disengage it from one of the griif frames the bar will more in an opposite direction with the other frame and give falling movement to the harness.- Each needle is positionedvertically and is adapted to be ll'fJECl, by the ascending cylinder in combination with a perforated card, to disengage the hooked end of a grid bar from one of the i ramcs, and thereby allow the bar to move backward and lower that portion of the homes to which the bar is attached. .Vhen the pattern cylinder descends the needle griyitat es downward a certain distance and is ready for the next succeeding upward movement of the cylinder. he particular gritl bar which has been raised by the needle will thus be released and drop downward to again be in a line with and to engage one oi? the returning grid frames.

Another novel feature of the inrention provides means whereby the harness frame may be raised or lowered to control nth ing action andadjust the neck cords.

The novel features oi the inrention are more ful y described in the following specilication andrlaims and illustrated in the ac companying drawings in which:

Figure 1 represents a side elevation of a machine embodying this invention, and arranged for pattern or jacquard weavin Fig. 2 is a vertical transverse section taken along the line m-m of Fig: 1. Fig. 3 is a view like Fig. 1. showing the parts in a different position. Fig. 4 is asection along the line g of Fig. 3. Fig. 5 is a section side elevation of the grid mec anis i. i

is a perspex" view r at (1 ml c n nism when a plain Weave chain cylinderis substituted for the pattern'card series cylinder shown in Fig. 5.

In these drawings the letter a designates a frame and b is a driving shaft journaled inthe frame. This shaft is connected to the main driving shaft of a loom (not shown) by any desired means, such operative connection being shown however, as consisting of .a sprocket Wheel 0 engaged by a chain (Z. At each side of the frame and secured to the shaft 6 is a pair of eccentrics 6. Each eccentric has a pitman f pivoted to the sides of the respective griff frames 9 and it. Each pitman has adjusting devices 2' by means of which the length of the pitman in its relation to a griff frame can be regulated. Each eccentric can also be adjusted by means of set screws j to vary the time of movement of one griff frame relatively to that of the other. The eccentrics e rotate with the shaft 7) and the pitmanconnections give the griff frames rectilinear reciprocating movement in a horizontal path and both the frames are timed to move in opposite directions simultaneously. The grifi frames are provided with rods is of suitable construction to slide in lugs m fixed to the inner sides of the frame a of the machine.

On the grifl frames are arranged a number of grifl's or griff bars n provided with hooks 0 for engagement with transverse blades 9) fixed to the grifl' frame g. The tail portion of each griff bar is offset to form an' abutment shoulder p for engagement with blades 7) ofthe gri'fl' frame It. To the offset end of each griff bar is hooked a neck cord 1 which is passed through eyes '1' fixed to transverse bars r of a frame s. The neck cords I are guided downwardly and are connected to the harness of a loom in the customary way. The harness frame s can be raised up or down by means of set screws 1? threaded in the frame of the machine. This adjustment of the frame lixes the relative positions of the neck cords and gives the proper tension to the harness.-

Securely fixed to the shaft 7) are a pair of slotted arms it. each having an adjustable pitman connection 2 with a spindle n. This spindle carries a cylinder w of any suitable form but in the drawings it is illustrated as octagonal in shape. The spindle is car- "ried by vertically movable frames a" which latter are guided through the instrumentality of vertically disposed rods 1) mounted in the main frame H. as shown most clearly in -Fig. 4 of the drawings. in some forms of. weave it is desirable to employ a different cylinder. The change from one to the other can be readily iLC(3( )Il'l])llSllQ(.l by sliding the spindle out of the core of the cylinder and out of the frame. The cylinder'can then be removed and any desired,

shape of cylinder substituted. In shaft or plain weave of the dobby type it is sometimes desirable to use a cylinder Without holes in connection with chains, and by means of the removable spindle the change can be easily accomplished. The cylinder is given a rising and falling motion by means of the adjustable pitman connection with the slotted arms aforesaid. This cylinder shown in Figs. 1, 3 and 5 has the customary holes in connection with a perforated pattern card 10 the purpose of which is well known. At every descent of the pattern cylinder it is engaged by a pawl 11 to give it a step by step rotation and thus feed different portions of the pattern card. The cylinder can be given retrograde movement when it is desired to move the pattern card backward for a repick by means of a slotted pawl 12 having cord connection 13 within reach of the operator. The cylinder is prevented from oscillating more than the one step by the action of a spring brake 14 adapted to frictionally engage one of the faces of the cylinder.

Fastened to the inner sides of the frame of the machine is a rack consisting of a pair of stepped uprights 15 having secured there'- to a series of angular plates 16 best seen in Fig. (i and extending across the upright frames. These angular plates have a plurality of vertically located slots 17 each slot being adapted to form a guide for one of the griff bars. These sl'ots space the griff bars a certain distance apart and at the same time prevent lateral displacement of the bars.

A series of needles l8 are-mounted on the rack and have their shanks guided in a perforated plate 19 secured to the lower portion of the rack uprights 15, as indicated in Fig. 4. Each needle extends upwardly through one of the holes 20 formed in the horizontal portions of the angular plates 16. The upper portion of each needle is provided with a hook 21 for engagement with one of the notches 22 locatedfa t the edge of the plate and situated between the holes 20. The head of the needle is positioned diagonally, as indicated in Fig. (3; thus preventing the v i v needle from turning and at the same time gives positive engagement with a lo'ive r edge portion of a grill" bar. 1

The framejt of the machine is provided with alseries of; transverse rods 23 to serve as platforms for carrying a, number of grid bars when not-.used incon'nection with the gritl' fran'ies as indicated in dotted lines in Fig. l. The machii 'e thus alfords ready means forsliding-the bars out of action and avoiding loss of or displacement of the unusedgril'l' bars. In this connection it may be stated that for a plain weave some of the grid bars are moved from engagement with the grid frames. This is done by disc(' n necting temporarily the neck cord attached weaving comprising harness operating means including griff bars adapted to be connected to jacquard harness or heddle frames according to the type of weaving operation desired, pattern means for controlling the operation of said bars, and means for holding certain of said bars operative or inoperative according to which of the types of weaving is being performed.

2. Weaving mechanism for fancy or plain weaving comprising harness operating means including griff bars adapted to be connected to jacquard harness or heddle frames according to the type of weaving operation desired, pattern means for controlling the operation of said bars, means for holding certain of said" bars operative or inoperative, and means for adjustably supporting the pattern means for actuating the griff bars according to which of the types of Weaving is being performed.

3. In weaving mechanism of the class described, the combination with a griff frame, of driving mechanism for actuating said frame, harness operating means controlled by said frame and including hook bars arranged on the frame, a series of needles for lifting certain of said bars to give movement to the harness in weaving, a cylinder support connected Withthe frame actuating means for carrying interchangeably a pattern card series and an appropriate cylinder or a pattern chain and an appropriate cylinder, and means for adjusting the support toward or from the needles according to the type of cylinder utilized.

4. In weaving mechanism of the class described, the combination with a griff frame,

of driving mechanism for actuating said frame, pattern controlling, cylinders adapted to be interchangeably connected to the griif frame driving means for cooperation with card or chain needle actuating elements, a support therefor, harness supporting means controlled by the frame and respective cylinder and including griff bars arranged on the frame, a set of needles adapted to be controlled by the cylinders for lifting certain of said bars to give movement to the harness, means for adjusting the cylinder support for raising or lowering the cylinder carried thereby for enabling cooperation of the latter with certain of the needles only, and means on which certain of the grit? bars are adapted to be mounted to render the same inoperative with respect to certain of the needles.

5. In weaving mechanism of the class-described, the combination with a grilf frame, of driving mechanism for actuating said frame, a cylinder connected to the grid frame driving means, a support therefor, harness operating means controlled by the frame and cylinder and comprising gritf bars arranged on the frame, a set of needles controlled by the cylinder for lifting certain of said bars to give movement to the harness in pattern or plain weaving, means intermediate the cylinder and needles for controlling actuation of predetermined needles according to the Weave aforesaid desired,

means for adjusting the cylinder support for enabling coiiperation of the cylinder with said needles, a main frame carrying the grid frame, and rack members on said main frame on which certain ofsaid griff bars are disposed when not in operation 6. In Weaving mechanism of the class de- 7. In Weaving mechanism of the class described, the combination of a pair of gritf frames arranged in spaced. relation, a main frame in which said griff frames are mount ed, driving mechanism common to and interposed between frames for simultaneously imparting reciprocatory movement thereto in opposite directions, a pattern device, her-- izontal guide means extending from. the u grifi' frames and coliperating with the main frame for guiding reciprocation of said' griff frames, guide members extending from the pattern device and likewise co-actmg with the main frame, and harness operating means controlled by the frames and said pattern device. I

8. In Weaving mechanism of the class described, the combination of a pair of griif frames, alined griif blades carried by said frames, driving mechanism for imparting movement to said frames in opposite directions, a pattern device, and harness open 'alingmcans including grilf bars controlled by said frames and resting on the alined grifi'blades of the frames, and means for actuating said bars li'controlled by said pattern device whereby certain of said bars are adapted to follow one frame to give lifting movement to the harness and others follow the other frame to provide falling movement to the harness for the formation of the shed.

9. In weaving mechanism of the class described, the combination of a pair of grid frames, driving mechanism for imparting movement to said frames in opposite directions, a pattern device operatively connect ed to the driving mechanism for actuation thereby, griff bars engaging at one end with neiaeee one of said frames for movement therewith and supportingly carried by the second frame, and means controlled by the pattern device for actuating certain of said bars to disengage the first mentioned end whereby permit the said disengaged bars to follow the sec nd frame for forming the shed.

10. in weaving mechanism of the class described, the combination of a pair of griff frames, driving mechanism for imparting movement to said frames in opposite directions, a pattern device operatively connected to the driving mechanism for actuation thereby, a harness, a row of griff bars carried on said frames and to which said harness is connected, said bars having engagement with one of said frames to impart lifting movement to a portion of said harness, and means controlled by the pattern device for L. mg certain of said bars in the row whereby to permit the lifted bars to follow the movement of the other frame and effect relative lowering movement of another portion of the harness for formation of the shed.

11. in weaving mechanism of the class described, the combination of a pair of grilf frames, driving mechanism for imparting movement to said frames in opposite direction, a pattern device operatively connected to the driving mechanism for actuation thereby, a, harness, a row of griif bars carried on said frames and to which said harness is connected said bars having engagement with one of said frames to impart lifting movement to a portion of said harness,

means controlled by the pattern device for -tion of the harness lifting certain of said bars in the row whereby to permit the lifted bars to follow the movement of the other frame and effect relative lowering movement ofarnother portion of the harness for formation of the shed, a main frame in which the griif frames are mounted, and means carried by said main frame for supporting a number of the gritf oars when not operative.

12. In weaving mechanism of the class described, the combination of a pair of grid frames, driving mechanism for imparting movement to said frames in opposite direc tion, a pattern device ope ativcly connected to the driving mechanism for actuation th reby, a harness, a row of grilf bars carried on said frames and to which said harness is connected, said bars having engagement with one of said frames to impart liftmovcment to a portion of said harness, means controlled by the pattern device for lifting certain of said bars in the row whereby to permit the lifted bZUIS to follow the movement of the other frame and effect relative lowering movement of another porfor formation of the slice, :1 main frame in which the grifi' frames are mounted, and means carried by said iii main frame for supporting a number of the gritf bars when not operative, said means constituting stop means for preventing disengagement of the bars from one. of the grit. frames. I 13. in weaving mechanism of the class described, the coi'nbination with a pair of gritl' frames, of mechanism for moving thef 'ames in a rectilinear, reciprocating, horizontal path, griif bars having one end hooked for engagement with one of the frames and formed at the other end with an offset portion for engaging the other frame, a pattern cylinder having vertical reciprocating movement linked to the grid frame mechanism, needles operated by the cylinder for unhooking a number of the blades, and a harness connected to the offset ends of the blades and controlled by the frames for moving the harness.

1%. in weaving mechanism of the class described the combination with a frame, of mechanism for moving the frame r eip rocally, griil' bars positioned horizontally on the frame and operated thereby, neck cords connected to the bars, and an adjustable supporting frame for guiding and controlling the lifting movement of the cords.

15. In weaving mechanism of theiclass described the combination with a griff frame,

of mechanism for moving the frame in a horizontal rectilinear path, grifi' bars arranged horizontally on the frame. and operated thereby, neck cords connected to the bars, and a vertically adjustable frame for raising or lowering the cords and guiding the same.

16. in weaving mechanism of the class described the combination of a main frame, a v

griif frame carried thereb means for moving said frame, harness operating means comprising longitudinally movable grill bars, and vertically disposed needles having diagonally i posed hooked terminals on which the bars normally rest, and means for actuating the needles to impart lifting movement to the griff bars, and a rack having slots therein through which the bars extend and notches with which the terminals of the needles are engaged whereby to guide said bars and maintain the needles in cooperation therewith.

17. in weaving mechanism of the class described, the combination of a main frame, a

grilf frame carried thereby, means for re ing the grifi bars and maintaining the same In testimony whereof I afiix my signature in spaced'relation and also having notches in presence of two Witnesses.

With which the lifting members are engaged LEOPOLD FUCHS.

to hold their terminals in a diagonal posi- Witnesses: 5 tion With respect to their coiiperating grifi GUSTAV A. BOELTGHER,

bars. ALFRIED ADERENTE. 

